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/*
* Copyright 2003-2006 Dave Griffith, Bas Leijdekkers
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.siyeh.ipp.junit;
import com.intellij.psi.*;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.tree.IElementType;
import com.intellij.util.IncorrectOperationException;
import com.intellij.codeInsight.AnnotationUtil;
import com.siyeh.ig.PsiReplacementUtil;
import com.siyeh.ipp.base.Intention;
import com.siyeh.ipp.base.PsiElementPredicate;
import com.siyeh.ipp.psiutils.BoolUtils;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.NonNls;
public class CreateAssertIntention extends Intention {
@NotNull
public PsiElementPredicate getElementPredicate() {
return new CreateAssertPredicate();
}
public void processIntention(PsiElement element)
throws IncorrectOperationException {
final PsiExpressionStatement statement =
(PsiExpressionStatement)element;
assert statement != null;
final PsiExpression expression = statement.getExpression();
final PsiMethod containingMethod =
PsiTreeUtil.getParentOfType(statement, PsiMethod.class);
final String specifierString;
if (containingMethod != null &&
AnnotationUtil.isAnnotated(containingMethod,
"org.junit.Test", true)) {
specifierString = "org.junit.Assert.";
}
else {
specifierString = "";
}
if (BoolUtils.isNegation(expression)) {
@NonNls final String newExpression =
specifierString + "assertFalse(" +
BoolUtils.getNegatedExpressionText(expression) + ");";
PsiReplacementUtil.replaceStatementAndShortenClassNames(statement, newExpression);
}
else if (isNullComparison(expression)) {
final PsiBinaryExpression binaryExpression =
(PsiBinaryExpression)expression;
final PsiExpression lhs = binaryExpression.getLOperand();
final PsiExpression rhs = binaryExpression.getROperand();
final PsiExpression comparedExpression;
if (isNull(lhs)) {
comparedExpression = rhs;
}
else {
comparedExpression = lhs;
}
assert comparedExpression != null;
@NonNls final String newExpression = specifierString +
"assertNull(" + comparedExpression.getText() + ");";
PsiReplacementUtil.replaceStatementAndShortenClassNames(statement, newExpression);
}
else if (isEqualityComparison(expression)) {
final PsiBinaryExpression binaryExpression =
(PsiBinaryExpression)expression;
final PsiExpression lhs = binaryExpression.getLOperand();
final PsiExpression rhs = binaryExpression.getROperand();
final PsiExpression comparedExpression;
final PsiExpression comparingExpression;
if (rhs instanceof PsiLiteralExpression) {
comparedExpression = rhs;
comparingExpression = lhs;
}
else {
comparedExpression = lhs;
comparingExpression = rhs;
}
assert comparingExpression != null;
final PsiType type = lhs.getType();
@NonNls final String newExpression;
if (PsiType.DOUBLE.equals(type) || PsiType.FLOAT.equals(type)) {
newExpression = specifierString + "assertEquals(" +
comparedExpression.getText() + ", " +
comparingExpression.getText() + ", 0.0);";
}
else if (type instanceof PsiPrimitiveType) {
newExpression = specifierString + "assertEquals(" +
comparedExpression.getText() + ", " +
comparingExpression.getText() + ");";
}
else {
newExpression = specifierString + "assertSame(" +
comparedExpression.getText() + ", " +
comparingExpression.getText() + ");";
}
PsiReplacementUtil.replaceStatementAndShortenClassNames(statement, newExpression);
}
else if (isEqualsExpression(expression)) {
final PsiMethodCallExpression call =
(PsiMethodCallExpression)expression;
final PsiReferenceExpression methodExpression =
call.getMethodExpression();
final PsiExpression comparedExpression =
methodExpression.getQualifierExpression();
assert comparedExpression != null;
final PsiExpressionList argList = call.getArgumentList();
final PsiExpression comparingExpression =
argList.getExpressions()[0];
@NonNls final String newExpression;
if (comparingExpression instanceof PsiLiteralExpression) {
newExpression = specifierString + "assertEquals(" +
comparingExpression.getText() + ", " +
comparedExpression.getText() + ");";
}
else {
newExpression = specifierString + "assertEquals(" +
comparedExpression.getText() + ", " +
comparingExpression.getText() + ");";
}
PsiReplacementUtil.replaceStatementAndShortenClassNames(statement, newExpression);
}
else {
@NonNls final String newExpression =
specifierString + "assertTrue(" + expression.getText() + ");";
PsiReplacementUtil.replaceStatementAndShortenClassNames(statement, newExpression);
}
}
private static boolean isEqualsExpression(PsiExpression expression) {
if (!(expression instanceof PsiMethodCallExpression)) {
return false;
}
final PsiMethodCallExpression call =
(PsiMethodCallExpression)expression;
final PsiReferenceExpression methodExpression =
call.getMethodExpression();
@NonNls final String methodName = methodExpression.getReferenceName();
if (!"equals".equals(methodName)) {
return false;
}
final PsiExpression qualifier =
methodExpression.getQualifierExpression();
if (qualifier == null) {
return false;
}
final PsiExpressionList argList = call.getArgumentList();
final PsiExpression[] expressions = argList.getExpressions();
return expressions.length == 1 && expressions[0] != null;
}
private static boolean isEqualityComparison(PsiExpression expression) {
if (!(expression instanceof PsiBinaryExpression)) {
return false;
}
final PsiBinaryExpression binaryExpression =
(PsiBinaryExpression)expression;
final IElementType tokenType = binaryExpression.getOperationTokenType();
return JavaTokenType.EQEQ.equals(tokenType);
}
private static boolean isNullComparison(PsiExpression expression) {
if (!(expression instanceof PsiBinaryExpression)) {
return false;
}
final PsiBinaryExpression binaryExpression =
(PsiBinaryExpression)expression;
final IElementType tokenType = binaryExpression.getOperationTokenType();
if (!JavaTokenType.EQEQ.equals(tokenType)) {
return false;
}
final PsiExpression lhs = binaryExpression.getLOperand();
if (isNull(lhs)) {
return true;
}
final PsiExpression Rhs = binaryExpression.getROperand();
return isNull(Rhs);
}
private static boolean isNull(PsiExpression expression) {
if (!(expression instanceof PsiLiteralExpression)) {
return false;
}
@NonNls final String text = expression.getText();
return PsiKeyword.NULL.equals(text);
}
}
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